document.write( "Question 480761: Please show solution for the following problem: At a school bookstore, a ballpoint pen costs $0.28 and a notepad costs $0.23. What could you buy and spend exactly $0.74? \n" ); document.write( "

Algebra.Com's Answer #329198 by Edwin McCravy(20060) $\"\"$ $\"About$

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Please show solution for the following problem: At a school bookstore, a ballpoint pen costs $0.28 and a notepad costs $0.23. What could you buy and spend exactly $0.74?
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document.write( "28 cents is an even number of cents, so the number of cents\r\n" );
document.write( "spent for the pens will be even, and since the total 74 cents\r\n" );
document.write( "is even, we must spend an even number of cents for the\r\n" );
document.write( "notepads so it will add up to the even number of cents 74.  \r\n" );
document.write( "Since 23 is an odd number of cents, we must have an even number of \r\n" );
document.write( "notepads so their cost will be an even number of cents.  We \r\n" );
document.write( "can't buy 4 notepads, for that would run over 74 cents, so we \r\n" );
document.write( "must buy 2 notepads costing 46 cents, leaving 74-46 or 23 cents,\r\n" );
document.write( "just enough for 1 ballpoint pen. \r\n" );
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document.write( "Edwin

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